Describe the greenhouse effect and its importance to life on earth. What are the ways in which human activity is increasing heat storage in the atmosphere?

Describe the greenhouse effect and its importance to life on earth. What are the ways in which human activity is increasing heat storage in the atmosphere? 

Your response must be at least 200 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying citations.

Cunningham, W. P., & Cunningham, M. A. (2011). Principles of environmental science inquiry and applications (6th ed.). New York, NY: McGraw-Hill.